I like that neologism, thanks for sharing it. I googled it to find this:

“Humbition is one part humility and one part ambition. We notice that by far the lion’s share of world-changing luminaries are humble people. They focus on the work, not themselves. They seek success–they are ambitious–but they are humbled when it arrives. They know that much of that success was luck, timing, and a thousand factors out of their personal control. They feel lucky, not all powerful… So be ambitious. Be a leader. But do not belittle others in your pursuit of your ambitions. Raise them up instead. The biggest leader is the one washing the feet of others.”

-Jane Harper, a 30-year veteran of IBM, and a group of her colleagues